The probability is 50% or half or 1/2
5 * 7 = 9y
35 = 9y
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3.8888888889
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y = 3.9
There are 105 in 6th grade because there are 75 boys right? So it said the ratio of girls is 7 and the ratio of boys is 5 so I divided 75 to 5 = 15 and I multiply 7 to 15 and got 105 girls.
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